Description
Buffer solution DuraCal pH 4.01 (25 °C) is a colourless calibration standard widely used for precise pH-value determination and electrode calibration in analytical laboratories. Specified at pH 4.01 at 25 °C, it serves as a common acidic reference point for meter adjustment, two- or multi-point calibration, and ongoing quality control. The solution has a density of approximately 1 g/cm³ and a boiling point of 100 °C. It is supplied in a 500 ml pack with a net weight of 0,701 kg and includes a DAkkS certificate for traceable calibration records. Manufactured by HAMILTON as part of the DuraCal series, this buffer supports reliable work in determination of physical properties, routine pH measurement, and instrument verification. The clear formulation and defined reference value promote reproducible results during repeated calibration cycles. Suitable for research, industrial, and environmental laboratories, the convenient bottle format enables straightforward bench-top handling wherever a certified pH 4.01 (25 °C) buffer standard is required.
This article is part of pH buffers & conductivity standards, in Buffers & pH solutions.
Key features
- pH value (25 °C): 4.01 ±0.02
- Pack size: 500 ml
- Density: ~1 g/cm³
- Boiling point: 100 °C
- pH value: 4,01 (25 °C)
- Appearance: colourless
- Certificate: DAkkS
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
Hazard Statements (H-Phrases)
Recently viewed
You may also like
Questions about Buffer solution DuraCal pH 4.01 (25 °C), colourless, with DAkkS certificate
What is this article?
Buffer solution DuraCal pH 4.01 (25 °C), colourless, with DAkkS certificate is the article on this page. Luminix Health distributes HAMILTON for laboratory use. It sits in pH buffers & conductivity standards, inside Buffers & pH solutions, in Lab chemicals.
A pH buffer for calibration has a stated pH at a stated temperature, often traceable. A conductivity standard has a stated conductivity. They are not general reagents and they should not be poured back into the bottle. The temperature of the measurement has to be the temperature on the label, or the meter has to compensate.
A buffer resists a change in pH when a little acid or base is added. It does that because a weak acid and its conjugate base are both present. A pH buffer used to calibrate a meter has a stated value at a stated temperature. A biological buffer such as Tris or HEPES is chosen because it holds the pH of a living system and does not poison it. Conductivity standards are the sister articles for a conductivity meter. The ions are on PubChem. Electrode calibration practice sits with EURAMET and BELAC.
Which category should I open next?
The category is Buffers & pH solutions. The sub-category is pH buffers & conductivity standards. The catalogue is Lab chemicals.
Shelves beside this one are Biological buffers (Tris, HEPES, MOPS) and Buffers (other).
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.